Your lawn areas look simple. Hedges twice per week?? wont need it. Edging and what not.. so so... replacing metal for rock...labor sure but materials are extra. It is really hard to judge the work in these pictures but based on what I see .. 10k may not be bad. I was up to about 13k but I cant tell how much trimming you have, how much mulch you have and so forth so I was trying to look on the high side. 10k may be suitable. BUT i am also only looking at the shrubs once per week and that is not gonna be necessary the entire 8 months.