If you also do a remote oilfilter install... how would you do it?

I have done this to my car but without thermostat... I made an seriel installation /engine trough filter, trough cooler and then engine), but if I fit a therstatsandwichplate now, I will cut the oilcirculation through the filter... correct?? oops..

Would it be ok to half the oilcooler with some kind of sheetmetal? ex. from 11 row to maybe 5 row, to get the oiltemp up??