Only had 5 hands on the guy, was running 40/40 with 50% 3bet.

Think a fairly std just call against an unknown 150bb deep, really dont wanna 4b/getin this for so many bbs with no history.

Think a just calling is my std here with no history, board is pretty dry and I wouldnt have much of a bluff raising range here anyway.

I dont expect him to ever have A2-5 here given preflop, but 25s/95o/J5 type hands are def a possibility. Still dont think I can do anything besides calling since he might even bet worse for value, its hard to have better for value and he can be barelling with fds/random 6x or turning 2/3/4x into bluffs.

Think this is somewhat of a clear value bet, my question is - a) what sizing would choose and b) what is the bottom of your valuebetting range?

Thank you for any comments, Im fairly new to hucg (mostly play mtts and decided to play hu so I have something to play when I dont feel like putting in an 8+ hour session) and would appreciate any help :)