Not for the procedure entry according to the AIM. But as we all know, the AIM lists 3 'recommended' holding entry procedures and none of them are regulatory in nature.
If I were flying the entry, I would do the standard 1 minute outbound (winds depending) before doing the turn back inbounds. Be sure to stay in the protected area.
Once established in the hold, fly the 4NM holding pattern.
According to TERPS criteria, the holding pattern size for an RNAV or GPS is based upon the minimum holding altitude (7130.3A). This of course could change if military aircraft were flying (requiring a higher airspeed) which requires a larger template evaluation area, which typically results in an expanded pattern size due to picking up higher obstacles.