IMHO, at M1.5 you won't need high temp resin. Just IMHO use something better than West Systems which is essentially low temp resin. You also shouldn't need to go to the tips. Somewhat up the fins should be sufficient, to reinforce and transition the fillets into the fins. However others should chime in with their experience. For reference, by the time you are looking about halfway out on the fins, the bending load is down around 20% of what it is at the root. That's why I keep saying normal T-T is counter-productive. It puts mass at the worst place for no structural need in most cases. It also adds mass and makes the job harder.
Sheared fabric would be better. With tape, half and parhaps more of your fibers are running the length of the tape. For T-T you want the fibers predominantly running in the T-T direction not the body tube direction! If you take a section of somewhat open weave but good quality fiberglass and stretch it out along a diagonal to the fibers, the fabric will distort into a diamond pattern weave. Keep stretching until all the holes in the fabric close up. Now use that; it is sheared fabric. Now all the fibers can cross in roughly the right direction for optimum strength.
To make it so you can actually handle the fabric, once you have it sheared take a sheet of wax paper and VERY LIGHTLY mist it with 3M77. That is, put the sheet down on a surface, step back a couple feet, and aim over the top of the sheet. Let the mist settle on the sheet. You want almost none! Now put this sheet tacky side down on the fiberglass. You can mark dimensions on the wax paper and cut out patterns with scissors or roller cutter.
Wear gloves while handling the fabric. Finger oils are bad!
Prep where the fabric goes, clean well, and put a first coat of epoxy on the rocket. Put the dry fabric and wax paper piece on and rip off the wax paper once it is in place. That's why you want almost no adhesion between the wax paper and the fabric. It is just a convenient mechanism for handling and transferring otherwise difficult to manage pieces of fabric. The wax paper should almost but not quite fall off. BTW, ripping the wax paper off fast works much better then trying to slowly carefully remove it. If you've slitted the wax paper in the middle and start from there, it might be easier.
Fo that matter, wear gloves while working with epoxy. You really really do not want to become allergic to epoxy. That would end your hobby.
Roll out the fabric layer, add a little more epoxy if needed, and repeat with the rest of your layers. If using multiple layers (which I recommend) stagger the widths. The closer to the fillet, the more layers. That's where the strength is needed.
That's one way. There are others. You can make your own pre-preg if you want to.
Gerald
