I think the question comes down to what you want to accomplish over the summer. You would have time to go through a training cycle for a fall half and still get through a full training cycle for Boston. If you wanted to do this, draw up a half marathon plan and go for it.
If you want to continue to focus on building your base through the summer and fall, then I’d suggest not doing things like hitting the track for blistering workouts. Instead, I’d stick with tempo runs, fartleks, and strides for workouts. These are workouts that fit very nicely into base building already but can also be used to build up to a pretty decent peak if you wish to do so. I doubt you need very much to get yourself to 1:24. Building your base will do a lot to get you close to that. All you need in terms of workouts is a bit of speed to top things off.