PoE Siege Ballista, Cold builds without Headhunter, Mageblood

I've been PoBing this build for a couple of weeks now and I think I've got a pretty decently optimized league starter tree+gear. 4 million pinnacle DPS with easily obtainable rares and no PoB warrior BS. No flasks except rotgut, nothing ticked that shouldn't be, etc, no additional curse, no influenced gear except a life % hunter belt. Fork socketed into 6 link. Ballistas turned off, guard skill turned off. Far shot estimated at 40 projectile travel distance instead of 60 (at 60 DPS shoots up to 5.5 million) With single target gem