I’ve been utilizing the 4 wedges approach to great success; now I’m wondering do I need to replace a wedge with a hybrid for all those 240+ yds par 3s? I already have the lv73 Callaway Rogue 3W at 240 yds but I’m not very confident in its ability to hold the greens even with maximum BS.
if you are playing rather well with the Srixon, I would continue to do so because you know the ball quite well with your clubs and most courses and conditions will allow you to continue to play well with that ball... in the meantime save up for club upgrades... ball expenses once you start playing a higher end ball start to build up exponentially over time and it is far better to play the most reasonably priced ball for as long as possible.
the challenges you will face will be more with longer courses and heavy winds like chambers bay and Erin Hills and possibly Congo's elevated greens or when you want a bit more distance on the BOP5 course, which is also a good way to work on dialing in your 3wd... that being said, if you are going to start going between different balls try not to have huge jumps in the meter speed as it will really mess with your timing and your play could become erratic.
Since you are potentially looking for additional distance and a little extra spin I would recommend the L45 Legend Cally ball which has better distance factors and lower spin rating than the L33 Cally.
The L33 Cally is a great value ball but in the instances you are looking to play at the moment with your current equipment it isn't going to be a noticeable difference from the Srixon you are already playing aside from the spin factor.
The L45 Cally seems better suited for what you may be looking for... the L33 will get knocked down in the wind more (especially headwinds) with a higher spin factor than distance factor. Sometimes you can counteract it a little with how you play the spin on the ball. Whereas the increase distance of the L45 and lower spin factor tends to allow it to cut through those headwinds better which is often what you will struggle with from the back tees on longer holes...
Therein lies the challenge... you will find countless ways to play and multiple suggestions... but you need to find what works best for your style of play... and also fits in with your credit bankroll or what you are willing to spend and with whether you are hoping to play competitively or socially. Everyone has their own goals so take your own interests and goals into mind as you contemplate the options.
What worked for me, may not work for you. I have made adjustments as my game progressed... but still play various balls depending on the circumstances or course conditions.
Best of luck!