I'm signed up for my first GSSF shoot in Orlando next month. I could use any advice anyone has to offer. Never shot in any formal competition before. I'm entered in the amateur civilian (G17) and amateur subcompact (G26). I have 8 mags for the 17 and 4 for the 26. Planned on shooting cheap WWB value pack ammo (bad idea?). Besides ear muffs and glasses, what else might I need? Will have my wife with me and don't know if I should bring her or not. Do many people do this? Plan on shooting Saturday only if it works out. Thanks.