91.205 applies to standard type cert a/c; homebuilts have 'special' a/w cert. 91.205 only applies to homebuilts if operated at night, or IFR. Unless the FAA has radically revised their 'boilerplate' for homebuilt oplims in recent years, the language is there, though it's in typical triple negative legal doublespeak. I just checked mine; issued in 2004. The following isn't an FAA doc, but it does do a decent job of describing requirements.Uh, no. First, go check out FAR 91 for what's required. Second, check out your aircraft's operating limitations, which might give you relief.
http://www.periheliondesign.com/downloads/MINIMUM INSTRUMENT AND EQUIPMENT REQUIREMENTS.pdf
If you're an EAA member, you could give them a call & get 'chapter and verse' on how day VFR homebuilts are exempt from instrument requirements.