Hi Patrick,
I started with a 29 gal also. Currently running a 55w AHSupply 6700k and a 20w T12 7800k to eliminate foreground shadowing. In my experience this has been enough light to keep most plants. (Even a lot that are considered high light). I think adding an additional 65w to your tank is really overkill.
If you think about the actual area available in your tank and convert that to volume, it's gonna push your WPG near 2.7-2.8. I'm at about 23-24 gallons. So that gives me about 3.1-3.2wpg.
I also inject pressurized Co2 at a rate of about 1.5bps and diffuse through a HOB. Which gives me a consistent count of about 26ppm Co2 during photoperiod. This rate actually depends on your water parameters and finding a happy medium between fauna and flora. I follow a strict fert. regime also using a weekly nutrient reset method. Your plants will tell you if you need to make adjustments to your dosing routine.
Just an FYI on your MA957 in case you haven't figured it out yet. It works more consistently if you set the low side to 20psi and adjust the bubble rate with the needle valve.
Hope a different perspective helps.
