this is my considerations
1. Botulism, can't see, taste or smell, and isn't due to the lids you use, so while that is a very important consideration for canning - not pertinent to the issue with new/old lids.
2. If the lid fails in any way and something starts growing, I've always been able to see/taste/smell it. So if you open it up, and it doesn't seem right, then don't eat it.
I'll be very displeased if I start having lid failure on items after it's been sitting on the shelf for a few years, but I suppose I won't know if the new lids are going to be an issue like that for several years.
I like to keep two years on hand - because some years are more bountiful than others. And it worked out very well this year - because of extended family issues that required a lot of traveling, we skipped the garden this year, and we still have plenty of canned goods in the pantry (which is in the cellar that stays 50-70 degF year round).