Preliminary Fish List!

Hello, after watching my empty tank for a few days now, I am getting
itchy to start building my fish! (I know I have to add gradually and
slowly - probably no real fish for 2 weeks, and can't have the total
number for 2 months or more.)

Here is my fish plan: the preliminary "total fish list" for when my
tank is cycled and ready for gradual additions. I've researched the
species, and I am aiming for a community tank. I've compiled their
water parameter needs as well as their maximum sizes. What do you
think? Any red flags? Suggestions? Warnings? :-)

Tank parameters: (5=B0dH, 7.0 ph) 50 Gallon bow-front tank, with 404
Fluval canister filter, 2-inches medium gravel, only one small live
plant so far

Desired Fish:
1-2 large angelfish (Pterophyllum scalare?)
* 6-8 ph
* 5=B0dH-13=B0dH
* 6" max size (12" total fish)
6 Cory catfish (Corydoras aeneus?)
* 6 - 8 ph
* 5=B0dH - 19=B0dH
* 2.7"max size (16.2" total fish)
6 Dwarf Neon Rainbowfish (Rhombatractus praecox)
* 6 - 8 ph
* 8=B0dH - 16=B0dH
* 1.9" max size (11.4" total fish)
4 Blue Gouramis (favorite!) (Trichogaster trichopterus)
* 6 - 8.8 ph
* 5=B0dH - 20=B0dH
* 3.5" max size (14" total fish size)
1 Bristle-nose Pleco (Ancistrus sp)
* 5.8 - 7.8 ph
* 5=B0dH - 19=B0dH
* 4.7" max size

Question: is my water too soft for the Rainbowfish? Total Fish number:
16-17 Total "Fish Inches" at maturity: 52.3 - 58.3"
Thanks for any advice!

- Lisa