You can combine the two - once.
- outfit a ship with both ADS (Advanced discovery scanner) and DSS (Detailed Surface Scanner). That will set you back ~ 2 MCr. for the scanners, but you'll make that back in the first 15 minutes
- go and visit
http://edtools.ddns.net/expl.php?a=v&f=LHS+3447&t=Maia&r=30
- fly that route, scan all the systems on the list (ADS) and all the listed planets in these systems. Each of them is worth on average at least half a million
- when you arrive at the Pleiades, get yourself a SRV and some cargo space (or bring it along from the start), then look for a "ripe" Barnacle from this list
https://docs.google.com/spreadsheet...3GQhC5KT-o9u05ihWKXebt4BcM/edit#gid=223643326 (preferrably undefended - the list also shows how many Meta-Alloys - MA - you can harvest), land, shoot the spikes with the big melons on them, collect the melons (those are Meta-Alloys, the smaller ones can also be shot and collected to yield various engineering materials). You can sell the MAs at a tidy profit. Of course, you can also buy one MA at Darnielle's Progress in Maia. Jsut don't buy more than one, you'll make a loss selling them.
if you fly in open, you'll have to be a bit careful in Maia itself. Maia is an Anarchy, and several less legally bound players consider it their home system. Enter at your own risk, so to say.