You are in the same situation that I was in with my STBXW. Two weeks on and two weeks off is too long for a 5 year old - that's more for teenagers.
The courts may likely do the standard every other weekend and Wed eve. for non-custodial parent.
I did not want to be a "McDonalds Dad" or "Disney Dad"... that is just having enough time to eat at McDonalds on Wed pm or just entertaining my 2.5 yo daughter.
Went through mediation inetead so we could set out own terms. I fought hard to have overnight parenting I have 6 of every 14 overnights. We now live 5 miles apart with pick-up drop off at daycare or elementary school.
Schedule is Tues afterschool to Wed am dropoff, Fri pickup through Mon am dropoff, next week - Wed afterschool to Thurs am dropoff, Thurs afterschool to Fri am dropoff.
Plus we each get 4 weeks vacation. 7 Holiday's alternate by year, but so does next day (if she gets thanksgiving, then I get Fri after thanksgiving, Etc.)
I was somewhat of a back-up parent before... now I have stepped up to the plate and am a full fledged father 6 overnights a week... and I've learned how important being a great father is (and how difficult it is - doing it now for 3 months).... and I want to have the nuclear family back together again - If not possible, at least my daughter and I will be a family.
You have to do what is best for your son and in line with what is important for both parents.