Are these rehab costs too high?

[Larry Flanagan]

I have gotten lazy lately when it comes to getting bids for work.  I have been just calling my usual guys and telling them to do the job, then I get the bill and resulting sticker-shock.  This is for a 1,200 SF ranch with 500 SF finished basement.

New 2.5 ton AC unit & coil - $2750

Replumb entire house (1.75 baths) - supplies, wastes, & vents (excl. fixtures) - $5300

Rewire entire house & garage to code - new panel, service ok (excl. fixtures) - $5300

Paint interior 3 colors (walls, ceilings, trim), incl. removing some wall paper, most surfaces required 3 coats, incl. paint utility basement walls & floor - $4650

I'm in a medium-sized midwestern city with average material & labor prices.