Im actually using these sort of cells for my mountainboard build but I have 6s6P pack
If you dont expect to draw more than 400w regularly, you might be okay but you are basically very close to the recommended limit.
Also depends on do you plan to go uphills.
For me power draw going up hill usually is about 30-40A (~860 W max)
And I’ve got single drive.
It has been said that ‘‘safe’’ / good power draw is about 3A (~1C) per cell, so in your case that would be 12A total, 6A per motor.
at 36v (10s), that would give you 216W per motor, and 412W total.
So if you go only on flats and not more than 30-35kph, it might be enough…
I dont have data on hot hot they become, but Ive heard they start to become hot if you draw 7A per cell from them and… reasonably, capacity then is also lower.
For 4P pack, Samsung 30Q might be your best bet, you would get the desired 60A, would still be very close in capacity Sanyo’s GA anyway, as I think they deliver more like 3.250 mah not 3.5ah as advertised.
So yeh, with samsung 30Q pack, at maybe 2.8ah usable capacity, you would still get 36v x 11.2ah = 403.2 Wh
For longboard this might be a huge range… something like 40km probably or 25miles.