It may be referred to as a potential MXE replacement, but it is a unique compound despite its close structural similarity to MXE and it should be treated as such. You shouldn't dive into it expecting it to line up in any way to the effects of MXE as it very likely will have its own unique dose response curve and may be more or less potent than MXE and it may very well carry some unique effects that MXE lacks. What I'm trying to say is that you would be better off starting at a very low dose and working your way up, gauging your response as you titrate the dose up slowly to get a feel for how this compound effects you, ignoring any preconceived notions as to how it should affect you and treating it as an entirely new compound with its own unique effect profile. It may be very close to MXE structurally, but replacing an ethyl group with a propyl can change a lot about how a compound binds to receptors in the brain and it should thus be treated as a unique drug, rather than trying to infer doses and effects based off its relation to other compounds as trying to guess the effects of a drug based on structure activity relationship is notoriously unreliable.I don't get what you mean about anyone would be disappointed either by my approach, this is being referred to as a potential MXE replacement, 160mg of MXE IM'd would be fantastic for me this was not which is what's disappointing here.
Sorry if I come across as preachy but this is just how I go about sampling new compounds as it seems to be the safest way to understand the effects of a novel compound.