And for unusual attitude recovery: play some ww2 combat flight sims on the pc. There are pretty realistic ones. I know you miss the actual feeling, but it can be valuable experience in emergency situations if you can assess your attitude in a millisec purely on the visuals from looking outside.
IMO WW1 planes are a lot more similar to the current garden variety SEP plane regarding weight and speeds than WW2 birds. There is even a free WW1 sim with excellent flight modelling:
Try Rise of Flight! . However, immersive and fun as these flight sims are: a) at the edges of the flight envelope they are all not very convincing (
AFAIK this even applies to high-end full motion sims used for commercial training), b) especially in stalls, unusual attitudes etc., all the sensations that cannot be conveyed visually are IMO especially important (and potentially unsettling), c) even many WW1 planes apparently withstood higher diving speeds and g forces than most usual SEP planes. Pulling a half-loop from inverted flight instead of rolling upright, for instance, will work out fine in these sims but is a potentially lethal temptation in a real non-aerobatic airplane.