Your rocket should weigh in at right around 1lb. ready to fly. You will find F-motors in the F-24-7W or F-39-6B F-240 V-max will go between 800-1100ft.
Most rail buttons come with the screws....#8 I believe. A 1/8 bit is used for drilling hole and the screw will self tap.
BEWARE: rear screw usually needs cutting off/dremeling/shortening. The motor mount tube is VERY close to Airframe.
I fly mine with a streamer on windy days....no worries... fiberglass can take much harder hits.
I just tape my tracker to shock cord, never been an issue.
A pound?!? my nose cone feels like it weighs almost a pound!
Where did you locate the upper rail button? above or below the top centering ring?
I saw a similar comment about using a streamer on a jart. I may have to try that.
thanks!