Available parts big block winter build.

Compression height of pistons mentioned above is 1.300".

If I was to build nice and sturdy big block out of all this stuff I guess it would make sense tu upgrade LY rods to some nice new H beam rods for like 600$...

Regarding ceramic coating to make the pistons "fit"new bore, it would be around 250$ but I really am very curious about this part. Seems like a perfect thing to do. My only concern here is how long does this stuff stay on the pistons. I have doubts after looking at ceramic coated frying pans at home ;-)

What kind of piston rings would you recommend?

Perhaps last thing im thinking about would be aluminium caps and gridle. When is this upgrade really needed? What about cross bolted caps? Frankly I dont see how the gridle helps? It seems to me that it would have to be much thicker than 1/4" to do the job...
Are aluminium caps an idea to dampen the hit? Do they crack from time to time?
I am not sure if upgrading this part aside of nice arp bolts makes sense. On the other hand doing it later means a lot of work so I may just do it now if really justified. Instead of building something for cheap out of parts available for free I should put some money in this build and have a nice future proof setup for some extra $$$... Just thinking out loud...

Machining is not that expensive where I am so this makes me want to go ahead with this project. Lets say its 'free' for me to avoid calculating it in.

Would be good to stay within 1500$ of extra expenses, but lets say 2000$ is within reach.
Where should this extra money go?

In the beginning I want to focus on the bottom end.