A strong second on the calls for the Arista Premium 100 & 400 from Freestyle - as stated, it is Plus-X and Tri-X respectively. Kodak's quality control is second to none, so I think that option may be better in some ways than going the cheap "Brand X film" route. I mean really, Kodak film for $1.89/roll? Amazing. When the price of eggs and gas has doubled or more in recent years? Even more amazing.
D76 1:1 is a very economical way to do this and maintain quality results - so that's a great idea as well. I used to use D76 all the time, then got on an Xtol kick (which is more expensive, for arguably very small difference in the result)...and recently HC-110 - which is dirt cheap and now that I have the times down, I could recommend that as well for an inexpensive developer combo w/ the re-branded Tri-X.
By the way, I like the shot - somehow artistic looking of a "normal" scene, which I think is very nice. With a scene like this one, when you've got everything down just how you like it w/ the Tri-X, try a roll of ADOX CMS 20 just for fun. The detail in the dock will be mind blowing.
Take care,
Jed