Larxene, you were quick to dismiss that Saturn is supported by both Moon and Venus, who look at him (with their rays) from the trine and sextile, and instead wanted to go to Jupiter.
One of the mitigating factor I would consider is the waxing Moon dominating Saturn with a dexter square. The Moon is in-sect, exalted and angular. In such a position, it tends to be beneficial to the native. It is still not full yet, but the waxing Moon is beneficial when aspecting the diurnal planets, Maternus implies.
I do not consider the sextile with Venus to be very helpful. Sextiles are very weak, and according to Maternus, they are only of middling strength when the sign in between is tropical or mutable (yours is mutable). So imagine, even at its full force (with the sign in between being an equinoctial sign, Aries or Libra), it is already very much weakened, so in a mutable sign the effects will be very slight.
First, I did not dismiss the Moon's beneficence towards Saturn. In fact, I consider it one of the main beneficial influences.
Secondly, while I agree that Venus is a benefic influence towards Saturn, I said that the effects will be very slight, and therefore not very helpful. I am following Maternus's doctrine in this, so other authors may say something different.
Okay, let me re-evaluate the combination.
Consider Venus's strength. In Libra (strong), matutine (middling), 12th House by WSH (weak). I would say about average or middle strength. Now consider Venus's favourability. In Libra (highly benefic), of the sect (highly benefic), 12th House by WSH (beneficence is strongly obstructed), Mars retrograde and in dexter quartile to Venus (beneficence is sometimes obstructed).
The aspect to Saturn is a sextile, the sign in between is bi-corporeal, Venus is on the left (weak benefic influence). With all these considerations, I still consider it to be a weak influence. This is because the highly beneficial influence of Venus is often being turned away from the native, and its relationship with Saturn is slight.
I would say that Venus's influence will be stronger and more effective on Jupiter, since they are in opposition.
I am not familiar with the use of trigon lords at the moment, so I do not use it.