Neat early 60s board, especially with the custom lam.
How much more would it be worth restored? Well, some people might pay more if you just left it as is, in its original condition. Every ding is part of its story, it's history. I once asked Dr. Ding to fix the only ding in one of my vintage Bings and he said I should leave it cuz it might be where David Nuuhiwa dropped his can of beer. Cool! You never know. If you are going to sell it, it might be worth more repaired (patch any dings and redo any poorly done prior repairs). How much more than if you sell it as is? Probably not a lot, especially after you consider the cost of repairing it. If you were to restore it - as in, sand off the pigment, repair all the dings, re-pigment the board and put on a new gloss coat, it probably would not be worth any more than the sum of what you originally paid for it and what the restoration cost you... maybe a lot less. Keep an eye on the "restored" Bing on ebay right now... There are exceptions, especially when one of the more well-known, reputable, restorationist do the work or if it is especially artistic.
Working on old boards takes a lot of skill. It's very difficult to get the repairs to blend in or match the color surrounding it, either the pigment or the clear areas. If you have the time and the money, make sure a pro surfboard restorationist does the work for you, not just a good ding repair guy. Expect to pay a lot to get it done right. Otherwise, leave it as is... it'll only appreciate in value.
I'm sure there are others out there who have a lot more experience at this than I do, and I'd love to hear what you think.