I don't think sia is good investment at all. There are more storage coming out of thin air. Storage on chain is problematic in name of legality too. I won't buy sia I won't suggest it to anybody.
Same here. I know a guy who tried SIA out, he gave some storage space of his harddisks to SIA. After a while he felt this to be restricting. Who wouldn't feel that way.
And, sorry to be so direct, but have you had a closer look at SIA's chart? A big peak in june - but since that the chart's trend is southwards. I would not recommend SIA.
Edit: Maybe the expected rise in the coming week will give an opportunity to get out at better conditions.