Glad you think 4 to 5.x degrees is too loose for a sextile (though some would say the power of the overall config could glue those loose aspects). I go the other direction and consider the relationship betw your Sun and Jup as a 2.15 applying orb septile (rather than a 6 degree loose sextile).
But, hey, just having a Sun-participating classic Kite (and another Kite which is spineless, unless you include the NN) should be enough to make you feel special.
The Grand Sextile is a more generic name for the config you mentioned and (last time I checked) it is formed (among planets only) one handful of times per century.
You can find it in synastry much more often (obviously...) and I have it with the wife from which I have observed that the oppositions are not turned into gold but, rather, remain what they are (though harnassed to an extent, as you would expect).
In sum (ime), any magic associated with a config's sexy label is just distractive entertainment and there's no choice but to start with the assumption that the config is no more than the sum of its parts.
p.s. noticing your Mars 45 Sat and your Moon 60 Pluto are both 7 min tight (approx 50 x stronger than the wide orbs on your Grand Sextile). Also seeing your Sun/Merc is not only trine Uran (for astrology interest) but also tri-decile Sat (30-ish min) which is why you love details enough to have remarked on your config's wide orbs.