Spiro or E first?

My doc wants to stagger them (one starting 2-4 weeks after the other) so she can figure out which one's at fault if I start experiencing negative effects, but she said that I can pick which one I want to start first.

I haven't seen much literature online about this (and the time interval is not so large that it probably makes a great deal of difference in the long run). Given that my T levels are pretty low (~200 ng/dL, which is lower than the normal male range and way lower than normal for someone my age) I think it might be better to start E first but I'm not sure if there's any reason I should not do this.

Anybody have experiences/links to papers on this? Given the short interval between starting the two treatments I'm mostly interested in the mental effects (I heard that spiro without E may cause listlessness and lethargy which might be something to avoid), but also the physical ones (esp. related to hip growth/fat redistribution).

Thanks!