Hey John I definitely like where you mounted the reservoirs too. If you want to keep them there (you already put a lot of work into it) maybe you can modify a portion of the cowl panel for a removable section or hinged piece so you don't have to remove the whole thing every time.
I do agree with what the others are saying too though, because I actually fuss with my reservoirs a lot. Topping off fluids, checking fluid levels between track sessions, etc...it pays off to have them really accessible. Plus, I have spilled a bit of brake fluid here and there and I'd hate the feeling of spilling some fluid down into the abyss of the cowl area.
EDIT: I should also mention that when the hood is up, that area is kind of a pinch point especially if you're doing a cowl hood....could be tricky to access for funnels, refilling, etc.
Your project is so dope!