OK...you mention 'red wood'...is that Red Oak? If so, it does not need a sealant. The EasyPrime is good at helping bond issues but it isn't needed for tannin pull on red oak like it is on white oak.
Please, please, please make sure they are using the Loba 2K Supra AT....Not the WS 2K Supra. They are TWO DIFFERENT PRODUCTS!
You want the toughest, grippiest floor you can get. That comes with Loba 2K Supra AT. The AT stands for 'Advanced Technology'.
Here's what I would do:
1. First coat Coat Loba WS 2K gloss (cheaper than the tough one....but not a sealant)
2. 1 Coat Loba 2K Supra AT (the tough/expensive one) in a gloss
3. 1 Coat Loba 2K Supra AT in the gloss level you want (satin, semi-gloss, gloss)
If you want three coats (I love the 3 coat system) but you want it to be as close to the original quote as they gave you, you can use the lower-priced WS 2K Supra as the base coat. Then you add the two coats of the BIG BOY = super tough without being super-duper expensive.
First things first: Get it in WRITING that you are are getting 2 COATS of Loba 2K Supra AT. And Email or Text is fine.
Q