Currently I have 3 chainrings on my 8 speed drivetrain, 42/32/22.
Im changing my entire drivetrain to 9 speed i.e. cassette, chain and chainrings. For training purposes what I would like to do is only keep the middle ring which is the 32, get rid of the smallest ring and substitute the largest ring with a bashguard. Can I do that? Will I have spacing issues if I use only one ring (32t) and a bashguard with a 9 speed cassette?

Heres the ring and guard that I was going to use:

Blackspire Ring

RaceFace Bash Guard