Compression will dicate what cam you choose. being that cam is based on your riding style make sure you provide what the cam needs other wise your end product may not be what you had thought it would be. For the stock compression there are plenty of cams to choose from. HQ cams, woods, andrews, zippers, R&R to name only a few. I am doing some testing on the andrews 54 now . i plan on using it in several engines sizes. The starting point is a 96 inch with a set of the cnc ported heads out of our power pack kit. The cam is a 204 currently. Once it is dyno tuned , we will swap in the 54 cam then back to the dyno. After that we are going to go to a 103 or a 107 not 100% on that yet. but should be intresting to see it all pans outs.
The 257 cam is a bit large for your current compression, for that I would try woods, hq or andrews ( order of listing is means nothing) for cams that fit your riding stlye. Since you did not list that , hard to give you a better selection version wise. Post that info and you can bet you will get a much better suggestion.