weights

I wouldn't wait until May, you should have included this all along.
As an example of muscle groups to work together I will give you what P90X does for resistance training
Month 1
Monday - Chest and Back
Wednesday - shoulders biceps and triceps
Friday - Back and Legs
Month 2
Monday - Chest, shoulder and triceps
Wednesday - Back and Biceps
Friday - Legs and Back
Month 3
Weeks 1 and 3 do months 1 workout
Weeks 2 and 4 do months 2 workouts

You can do this with your own exercises, you don't have to follow the program itself. Hope this helps.

oh also im going for the ripped effect if poss so ive been told heavier weights with lesser reps is best...this right?

That's the way to go to build muscle and strength. Keep doing cardio to burn fat and get shredded.

This comes from Bret Contreras who is a fitness expert...you can Google him. I'm paraphrasing from an interview he gave:

Full body workouts are superior for beginners. 4 to 6 full body workouts per week are ideal. Beginners can make good gains from using a relatively light load (50-60% of maximum capability). Gradually increase the load while maintaining ideal technical form. Beginners run the risk of musculoskeletal injury so maximal loading should be avoided right off the bat.

Beginner routines should consist of mostly compound bodyweight and free weight exercises. Beginners must learn how to control movement through full ranges of motion. The best exercises for beginners are squats, deadlifts, lunges, hip thrusts, push-ups, chin-ups, dips, inverted rows, planks and side planks. Moderate repetition speeds should be used with an emphasis on eccentric control.

I agree, don't wait until May to start strength-training. Good luck.