So long story short, I've got 7 new stained pre-hung interior doors that I kinda need installed asap as the doors are holding up the trim among other things.  The person doing the staining took forever and now the frames/jambs have warped due to humidity and are in my opinion beyond repair.  Menards says I can special order new, but I'm also told I can buy the "better" jambs in store and assemble them myself.  

Saving a week by self assembling sounds ideal, but I'm worried about cutting in the hinges, latch, etc.  Can anyone give some insight as to how this is done "the easy way"?  I assume (hope) there is a jig or kit of some kind?  

I do have a router and small assortment of bits that should come in handy I would think.

this is a prime example of what I do and how I think.

id buy new prehung doors and give the bill to the guy that didnt stain them in time and caused the warping due to improper storage practices.. I wouldnt mess around trying to build frames, cut hinges, and etc.  the time/money you spend on new parts, new tools, fucking around for a mediocre outcome, it's just not worth all the hassle.
thats just me.

If it was one door, it might be worth it. For 7, get them prehung.

I also wouldn't put 100% of the blame on the guy staining, you should have hung the doors and then dealt with finishing/staining.

I'm also doubtful the frames are warped beyond usable.

This.

It isn't even a gamble, it's almost a certainty that you will see movement in very short order if you don't get them hung ASAP after purchase. Once hung, pull the slabs, strip off the hardware, and finish them.

You'll dump hours and hours of work and a few hundred $ into buying jamb kits and if you aren't skilled enough to massage the current jambs into place I'd be concerned about fabricating new jambs that look right. It's not intended to be a dig, just recognizing that building jambs, even from a kit, is a tricky thing and will take someone who hasn't done it many times longer and requires a lot more attention  to detail than hanging a prehung. A professional would more often than not replace the prehung instead of the jamb because the labor investment is more than the cost difference by a large margin. If you're already behind on time, this isn't your solution.

DIY guy. Pre hung every time.  I’ve done both.