Cobrajet Advice
As an F-15 flyer I second his advice as well. Do yourself a favor while you're up nice and high see how slow she will fly using the nose to slow her down along with power (after she's all trimmed out).
Once you see up there how forgiving and slow she flies you will be very very comfortable on landings, on your third or 4th flight take her nice and high and see what is the stall point on her and that'll teach you how slow you can get her.
Try to do two or three slow approaches always on the throttle, the F-15 Loves to land Nose up with a bit of power, the more power you give her the more you can pull on that nose up to a certain extent.
F-15 is the right choice to learn and practice slow flights and I'm really sorry you lost your other 15, you will be very happy with this one as it came out beautiful.
Good Luck Eduardo you will be very happy with this Jet as they have no bad habits whatsoever.
My best Regards.........Johnny Hernandez