Steve,
you will not notices a thing. the base is flat and the edges are sharp. the brown spots dont "take" wax anymore so yes thoes spots will not glide as well as the rest of the base.
I am over 200 (ok 210) and I consider this a soft 185 think of it as a narrow freecarve more then a stiff GS board.
It has a 14 SCR
If someone just put you on this board with no prior knowledge of its base issues could you really tell the difference in handling ? no not unless there was a clock or PGS going on. no you should not race for money on this board but it would be fine to practice on (save your nice race board when you get it). Since it is not a rock hard board it will take less effort to bend it into a turn but it will also not feel as solid at speed as older stiffer or new metial boards.
Starting out on the cheep, I am looking to eliminate any equipment factors in my learning curve and put the lack of good carving on my poor technique alone with no excuse for my old equipment ( does that make sense ) Well it depends what you old equipment is like, but it is 185 with a 14 scr so this is not your little bros park/jib 157 soft boot board.
Thanks again.