1996 Nissan Altima I have multiple questions

My car is running great. However, I had my radiator flushed and they gave me a list of stuff that needs to be replaced and I would like to know if it is worth it if I am planning on keeping the car for less than 6 months. I have 7 different leaks; power steering lines, power steering rack, boots are also torn in half. Upper and lower oil pans; front crank seal and timing cover seals; transmission fluid (which is also dark) pan; passenger front control arm bushings are oil soaked and coming apart; rear sway bar end links are blown out; drivers side front cv boot is torn and slinging grease; is it worth it to have all of this fixed or even ANY of this stuff? Will I be stranded if I don't have any of this fixed? Also, should I have the transmission flushed, or what do I do about the fluid? Another question is they mentioned I have a misfire and I know which cylinder it is, also I have motor mounts that need to be replaced, but I am thinking they can come from the junk yard and save me some money along with the labor. I am just looking for opinions and I value your opinion. Thank you.