On one of the exhaust pipes there are multiple holes in it and is slowly getting worse. We have filled them with cold weld which works good but don't know how long it will hold. I love my stock pipes but I have always wanted to do something different eventually.
Nice looking work! That's something you should be very proud of.
If you've got rotting-out exhaust I can see the need for alternatives, due to the price of a new stock system, but don't by any means think you'd be doing something different by putting on a 4-1 and pods. If anything, that seems to be the norm now. It looks like you currently have the stock air box and filter assembly. You will never get it running as well as it probably does now if you put pods on it.
If you only need one new pipe, the cost will not be nearly as prohibitive. Also, I've been running my '76 550K with "Muffler Mender" plugging a couple of holes for the past five years. It's definitely not a permanent solution, but it can be a long-term temporary solution.