Depending on what panel you buy you can most likely buy a panel mounted surge supressor. Cutler hammer makes them (& just about everyone else). You just install it in a vacant spot in your panel. Easy as pie, and there is a nifty LED light that tells you if it is good. I've got them in my house & shop.
There are supressors that have a higher rating, but they are not panel mounted, you have a separate enclosure for the supressor. I'd only consider one if I lived somewhere with massive lightning. They are big bucks and a bit of a pain since they need a separate enclosure.
Keep it in mind that they won't protect you from SOV (sustained over voltage).
That is when the utility has a higher voltage line fall into a lower voltage line. Example, your shop is fed from a bank of transformers that are connected to a 12,470 volt circuit. Above that circuit is another, that operates at 69,000 volts. Some doofus wrecks his car, knocks down the 69,000 volt line into the 12,470 line. That is a SOV event. Your shop will momentarily see 5X the normal voltage. You can't protect against this kind of event without spending a bunch of money. Not worth it unless you are Microsoft.
Post your panel brand & model, I'll try to get you the right part number for a panel mounted arrestor.