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Most fitness buffs do not have barbells and racks in their garage or barn, much less a fancy home gym. Still, most have bands, hand weights, some dumbells, maybe a kettlebell or two. TRX straps are versatile and take up no space.
Without barbells, it will be difficult to build strength while away from your gym with their heavy weights, so many of us are stuck doing our weights routines in suboptimal fashion. For example, doing floor bench presses with 10 or 15 lb. hand weights cannot compare with barbell bench presses.
The same applies to dumbell deadlifts.
(Generally-speaking, low reps refers to exertions you can only manage to repeat around 6 times, medium reps refers to exertions you can only manage to repeat 6-15 times, and high reps are over 15 times. High-rep exertions, even to failure, do not build strength but build muscle endurance. Low rep exertions build strength but not endurance.)
The point I want to make is that, without access to a good supply of varied serious weights, April might have to be a month of endurance weight training instead of strength-building. Why not? It is better than nothing.
That would entail, for example with lower body, squats with dumbells/hand weights X 20 per set, or dumbell deadlifts X 20, or 20 floor bench presses per set instead of 5-10. These sorts of things will slow the strength loss that occurs after 10 days without heavy weight stress.
Your calisthenics days and cardio days are easy at home or outdoors, so no need to discuss that.
Great workouts can be done and great results achieved with relatively minimal equipment - an oly bar (plus weights), chin bar, a box (adjust the height by either putting ¾" mats on floor or on top of box), TRX straps, and a heavy weight vest.
Throw in a squat rack if you have room or do your "leg" work using box and weight vest (step ups, RFES, single leg squats).
Can't do bench press? Try push ups (floor or TRX) wearing 100# weight vest!
Many people will find a home made straight bar attachment for the TRX is a great addition to the individual handles.
Many companies make adjustable dumbbells. Price range varies. Cheapest version (that is reasonably fast to change weights) is a couple with spin lock collars. As far as kettlebells go, the kettle clamp is nice to have.