Seeking pointers/ tips for finishing new maple flooring.

I'm in the process of installing ~1200 sf of hard maple flooring. It is 'random' width, 3.25', 4.25', 7.25' and 8.25", tongue and groove with moisture content between 5% and 6%. Installed at 45* angle over radiant.

I have 3 gallons of TruSeal 7 gallons of GlitsaMax. I figured 350sf of coverage for the max. Is that reasonable?

Does anyone have any pointers for applying the glitsa? All I've been told is hire a pro, you'll mess it up, water based finished are impossible for a home owner. What type of applicator would you recommend? T bar? Will turning off the radiant and letting the house cool off somewhat buy me some leeway when installing?

I fully understand that I'm not a pro and likely will have some 'character' in the finish. Ill start in a room I don't go in often so I'm not reminded every day... I don't expect perfect, just want to avoid a disaster. Like when i was 16 and mixed the entire tube of hardener with 1/3 can of Bondo.

Thanks for your help!

Using water-based finish is not that different from a solvent based finish. You need to have the radiant off when laying the floor. Sand to 100, then polish with a 100 grit screen. Mix only what you will use at a time
Use a cut-in brush and a 10 inch pad starting at the corner away from the door.
Pour a 2-3 inch puddle in the corner, cutting in as you go. A helper doing the wall cut-in helps quite a bit. Work from a puddle dragging the pad along the edges of the planks in a snow plow technique gradually getting to the other wall and out the door. Be sure to get all the floor wet with finish without pressing too hard to squeegee the finish as you go. A T bar works well for big rooms, but is not necessary.
You should have enough finish to complete the job.
After you get the last coat on the floor, gradually bring up the heat again.