Looks like i have became a quality hooker. Heef if i play hooker for the rest of my career would it take over prop as my primary position in the sim?
No - because your "position" isn't a position as such - it's just the way your player's skills are built up. Clearly there is a similarity with the skills that props and hookers need, and if you work as a hooker, you work as a hooker. You are still likely to play better as a prop, but the registration you have has clearly set you up to succeed as either.
Hard to know. On form, in the top 3. But you're in good form; which resets at the end of the season. Might be a bit different next season, but suffice it to say, it is currently worth having you in the Souths match-day squad.
Azzal's in the gym all the time though so should hopefully be quality even if his form isn't as solid next