Living in the Present, only Looking Forward

[Coconut]

So I'm finished with the house inspections, just waiting for the estimate from the general contractor that checked the foundation and then will get back to the seller and play lets make a deal. There were a few big issues found as well as normal small things in the inspections, I don't care about the small things and expect them, but I'm struggling on what to do about some of the bigger deal items, here's a list of the bigger items:

A/C - blower fan stopped working during the inspection. $375 to replace the fan, but unit is 25 years old and needs to be replaced (10-15 yr lifespan on AC units), $5,000 to replace.

Septic - Drain field box is destroyed, and drain field piping is blocked by roots. $550 to replace box and repair plumbing.

Roof Leak - roof is only 5 years old, but leaking around the chimney, $750 to tear everything out around chimney and redo.

Foundation repair - apparently roof has been leaking around the chimney for a long time, cause there was a support beam added under the floor (crawlspace), contractor says it works but isn't done properly and won't last so should be redone correctly. I'm waiting on the estimate for that but figuring 3-4k range.

So, I am going to ask for enough money back at closing (or lower purchase price) to fix the roof leak and septic ($1,300). But I'm struggling on what to do with the other two.

Do I ask for enough money to replace the A/C ($5,000), maybe some money towards replacement ($2,500), or just request they fix the A/C before closing (which I don't really want to fix since it's going to need to be replaced anyway).

And as for the foundation stuff, I'm perplexed. Like I said, what is there works but is going to need to be redone at some point. My thought is to ask for 1k or 2k towards it, but I don't know if that is realistic and I don't want to insult the seller.

My realtor is suggesting I request 100% of all the big stuff since I'm not even mentioning the little stuff, and then negotiate from there. So that's what I will probably do, it just seems like a lot to ask, especially since they agreed to such a low sales price.