Me, well I have a different opinion. Not a guru though so...
My thoughts are that it's all in the combo and tuning. The parts you are talking about are very mild and not out of the range of stock upgrade parts that if done correctly the truck will run exactly the same as stock with the ability to turn it up a little if wanted. I've heard that a larger dp can lead to boost creep, but the porting of the wastegate should help control that. The only thing I question is the 96-octane chip. Now it will depend on the individual truck, but 92-93-octane should be good for 17# as long as the timing is not too aggressive and your intercooler is up to snuff. If 96 is readily available where you're at, it will let you dial in more timing and give you a little cushion, but idk if it is actually necessary. Don't forget about the snowball effect though. Sometimes changing one thing leads to another and another, which is what started this question in the first place, lol. Even though you are talking about mild changes, things such as upgrading the fuel pump (stock pump is marginal at best), need to be done, while things such as a better i/c pump probably should be done, and things such as will my transmission need to be refreshed need to be considered.
Of course, there is a lot to be said for, if it ain't broke, don't fix it. When you work on 30-year-old cars, things can go wrong. Broken bolts, stripped threads, cracked plastic parts, etc. These trucks are only original once, but if you've got to replace parts, then what I consider, stock replacement "improved/upgraded" parts, make sense. I guess the point I'm getting at is if you're not throwing everything in the old ATR catalog at it or chasing a quarter mile number, you should be okay. Keep it conservative. It's when you get out of this range and into "race parts" or tuning it to the ragged edge, that things get complicated.