want to try out stand development
It's a free world and choice is yours, but:
1: Don't expect any magic. There isn't any in stand development. There are rather subtle effects you may get, but...
2: ...don't complain if you run into (massive) problems with uneven development. These are common with stand development.
If you want to enhance acutance or somehow do something in terms of harnessing contrast by using local developer depletion, I'd suggest starting with agitations every 5 minutes or so and picking a development time that's somewhere in-between the time for normal agitation and stand. Sorry, can't make it more specific than this; you'll have to determine a suitable time and agitation regime based on your own testing. See the (much debated, by some outright denounced) work in this area by people like Steve Sherman
https://www.powerofprocesstips.com/
I'm not taking position in this reduced agitation debate at the moment, but I do admit that I'm currently employing such a scheme specifically (and exclusively) for large format negatives for carbon printing to see if it enhances acutance.
https://tinker.koraks.nl/photography/pvc-development-tubes-for-sheet-film/
If anything like this makes much sense for 35mm or 120 film - I don't know if the potential drawbacks are worth the supposed benefits. You decide. Optimization of acutance is a common 'trick' (chemically controlled) in C41 color film. It can also be overdone, resulting in pretty horrendous results.
If you are relatively new to film processing, I'd strongly suggest letting these kinds of experiments wait until you've gained more experience in processing film and most importantly judging the results thereof. I speak from personal experience here; I've always done a lot of experimenting, and virtually all of the experimenting I did in my first year or two years of processing film I misinterpreted the outcomes of and basically didn't understand the first thing about what was going on. The experiments sometimes worked, sometimes not so well, and when they didn't work out very well, I generally only found out years later (as I didn't know what to look for!) I learned a lot
in hindsight, so there's some value in all that work, but not at the time of conducting the experiments.
Of course, this is somewhat of a personal perspective, but I see relative newcomers to film processing falling into a very similar trap pretty much all the time and the outcomes (both photographically speaking and in terms of knowledge acquired) are usually poor. They read somewhere that stand development is somehow supposed to be good for you so they do it. So far, I've seen precisely *zero* concrete evidence of real benefits of stand developing 35mm and 120 film intended for either optical enlargement or digital scanning. I'd be gladly shown this evidence so I can adjust my opinion. I've seen *many* examples of rolls of film that were in principle exposed reasonably well, turned into a pretty much wasted sorry mess that even a Photoshop guru can't fix, because stand development was supposed to work magic.
I think I made it clear that I'm skeptical and that my opinion based on the extant evidence (including my own) leans to not recommending stand development.
Having said all that: if you think about what stand development does, the logical conclusion follows that it's not extremely sensitive to temperature. That is to say, within reasonable limits. Chemical activity will be higher as temperature rises and this also has something to do with fluid dynamics and phenomena like convection. Especially if you start out at a lower temperature and allow it to rise during development, you may notice effects that you could attribute to this (although I doubt in your case you will actually nail this down; it would take a lot of systematic testing and perhaps computer modeling to figure this out). Long story short: I'd try to keep temperature somewhat constant, not worry about a drift within let's say 4 degrees C or so, and allow for higher temperatures in shortening development time a bit. By how much - you figure it out. Again, it takes systematic testing.
If the above is a little hard to follow and brings more questions than it answers, you probably got the point I made earlier!