LVT service recommendation

I am considering trying to make some optical enlargements from black and white digital originals. Assuming I have 4x5 LVT (actually 4x4, images are square) negatives made, how big can I print them? I don't think I would go more than 20x20. The originals are 10x10 @ 300dpi, about 8.5 MB. I have had them printed digitally at 20x20 and they look fine (all dimensions are inches).

Also, can anyone recommend a supplier for the LVTs? I am in SoCal, but I assume any source in the continental U.S. would do.

Pieter12 said:

...I am in SoCal...

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Whether you're in southern California like me, or Goodwill Arizona as your profile indicates, I look forward to any answers other provide.

Analogue Arts, London UK
Have well calibrated LVT that I've had good negs from.

If your still looking here's one https://digitalsilverimaging.com/lvt-digital-to-film-output/