This is worth exactly what I'm charging you, nothing, so here goes.... If the goal is to stack silver, CRH'ing is almost certainly a very poor idea. With the time and resources expended you'd be far, far better off mowing lawns and taking that money to buy around spot. However, I believe most of us aren't really in it to stack silver, we're in it because we like the idea of treasure hunting and treasure finding. With that being said I like to find all kinds of treasure. I found 2 buffalo's in a roll yesterday and was stoked. One was dateless so worth a nickel and the other was a decent 1920 so maybe a buck or two - not even 'worth' the melt value of a 40%er. However I was definitely more amped about a 2 Buffalo roll than I am about any single 40%er. If you like finding Rosie's (one of my favorites) or low mintage Jeffersons (one of my favorites) or wheat pennies (one of your favorites) or gold coins in dime rolls (one of my favorites) than I'd say a few boxes of everything is the way to go. If you only like hunting and finding halves then up your halve volume. If you want to accumulate and hoard silver then buy a lawnmower.
To your question about breakdown here was my week last week:
Pennies - $85.00
Nickels - $510.00
Dimes - $1,285.00
Quarters - $240.00
Halves - $2,100.50
Dollars - $36.00
I prefer the variety. Had a bad penny week (25 wheats), a very good nickel week (5 War, 5 Buff's, 2 proofs and several lower mintage Jeffs, 1938, 2x1952-S, 2x1958, etc...), a horrible dime week (3 Rosie's - the previous week was unbelievable), an average quarter week (I never find anything other than a stray teller tray find every now and again), a very poor halves week (3x40%ers, 5 proofs, 1 foreign a 5 Drachmai from Greece and 29 NIFC's including a mint roll of '06-P) and a pretty good IKE's week (found 21 strong BU IKE's, very nice coins). I'd rather have the variety than another 3 or 4 40%ers. That being said I'd rather have another 40-50 40%ers than the variety.....