I don't think front loading is necessary personally, but i completely understand why people want to do it.
I calculated stuff for you because using different esters makes it complicated since the longer ones need to build up
If you want to do 500mg test c/e per week:
First (Monday) and second pin (Thursday) is 400mg
Then 250 from then on
I'm attaching 2 graphs, one is no front loading the other is w the front loading. W the front loading your levels will be stable at day "3.5" (which would be your second pin on the first Thursday of your cycle) Makes things much more simple using the same ester
Good luck

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