Hi Joel,
Some of the guides have prices, the prices are a guide, not really what things are selling for. Let me throw out a couple ideas here. You should try to insure for the least amount it would take you to replace the collection. There is no reason to go for an inflated price for strikes and pay the extra premiums. This is what happens often with coin collections, jewelry, and the likes. I use a copy of Cohenour's guide to keep an inventory and just keep all my receipts for the cost I paid, then just insure for actual cost. If silver goes way up, you can raise the price on the commons. But on the rare strikes, the price of silver really doesn't matter if it's $15 an ounce or $20 an ounce. Sarge has done a nice excel spread sheet (for free just for asking) and it's very easy to customize.

Maybe someone else can offer some tips here, good record keeping is the key to all of it. Insurance companies are reluctant to pay out claims with no records.

Final point, check into storage of high value strikes in safe deposit box. My insurance company gave me free coverage for bank box equal to my stated value. This gives me essentially full coverage for two locations. The part of the collection at home is covered for the same amount as the collection at the bank. The only way you would not benefit from having this set up is if both collections were stolen/destroyed at same time. Good Luck

Paul