Tyres help advise w205 c class

[fortuner]

Hello all I need some help and advise ..

My moms w205 needs two rear tyres I want to move to normal tyres not run flat..

Can i only do the two rear for now and change the front after about 5000 miles ..

Secondly is their any recommendations for if I get a puncture what fix to keep handy ..

And general opinion of it's a good move to move to normal tyres..

Thank you in Advance.