Wow, can I ever relate to that. I did one on my Mom's 97 about 4 months ago, had me cussing a blue streak (to the dismay of the neighbors). I started it at about 5 PM and finished at 1:30 AM, had to make a trip to pick up ratchet wrenches to get everything apart and it just took forever.
Granted, it was the first time I've done one on a Northstar engine, mine is a 4.9 and is MUCH easier to get to. I'm sure the next one I do (and there will be a next, 4 Cadillacs in the family and counting) won't be nearly so bad since I have one under my belt now and know what to expect [and what NOT to do].
Hard as it is, just be patient when doing it, some of the bolts have to come out an 1/8th turn at a time and it gets terribly frustrating. My temper probably made the job 5 times worse than it had to be.
And yes, I too still love my Cadillacs - the things we do for love <chuckle>.