2000 frd explorer problems

ok so here are the problems:

upper intake gasket leaking

bank#1 and bank #2 lean and misfire codes??

codes #p0171,#p0174,and #p0300

said i needed timing kit

t/ cover gasket set

so my problem is which do i do first or do i jus try to get a new car???

i do love my baby “car” we’ve been through alot…

What engine? How many miles?

sohc engine and about 111,000 miles