Wel done for rescuing an MG.
Well done for pointing out the probs you've found.
But..... For 300 quid the car is going to be a proper snotter with lots of obvious and also hidden probs.
Definitely not a criticism for what you are doing, just the opposite, but keep your expectations low.
And keep being vigilant.
Good luck.
Cue Angry Mob who've bought 300 quid MG's that are 'immaculate'
They're not.