What adoption type?

So, I was looking through a old sketch book and laughing at how bad my art was but then I came across a lot of old designs that were still good! So I wanted to sell them to good homes but my adopts haven't been that popular lately so I want to ask what would everyone prefer? I just have a few commissions to finish up and then all my free time will be devoted to making all these adopts! Anyways, below I have what will be included in the mixed of all and some explanations!

All types I will consider

PTA(pay to adopt) : This is simple, there will be a set price I deem fitting and you'll simply play that price to adopt the gem!

BTA(bid to adopt) : You will have to offer a amount of coins and keep progressively going higher depending on others amounts before the time limit is over to win the gem!

DTA(draw to adopt) : You will draw the gem any way you'd like, a ref, interacting with another character, fusions, etc. To win the gem, there will be a deadline and form to fill out with it!

OTA(offer to adopt) : you will offer coins, money, points, art, or gem ocs (must have clear refs and be HQ) to win the gem! There will be many other offers for the same gem so you can't get mad if I don't accept, I will tell you when I accept. Of course I expect to be notified if you'll take longer than what you originally said and require progress such as WIP or sketches. They will be pending until the offer is complete, if the offer is not complete and don't hear back from you I will open them once again. If you offer coins and art but can't go through with giving art, you may substitute it with coins/points/etc.

CTA(comment to adopt) : this will be for gems that I don't think are worth much but still deserve good homes. You will have to fill a form out and give reasons why you want them and what you'll do with them so I'm assured she'll have a good home!

Raffle : This is quite simple, you buy a ticket or just complete steps then I will ask for a number from you, mark you down and once they are fill I will use a random number generator to pick results. Of course if I choose to add extra ways to earn tickets or entry spots they will be cheap, such as 10-50 coins each.

Chinese Gacha roll : this will be something I haven't actually done, so it'll be new. I'm excited to try it. This will be how I'll work it. Depending on the amount of gems I add into this category I will add rows, certain rows will be higher tiers and cost more. Such as

Row one-100 coins for a roll

Row two- 200 coins for a roll

Row three- 300 coins for a roll

And so on, if I do this there will be a elaborate rule set and steps to assure it runs smoothly.

Mystery adopts : exactly as the title says, it's a mystery adopt. There will be a gem, silhouette, or aesthetic in place of the gem. You'll pay a certain amount and them I'll pm you with the gems appearance and mark it as adopted/taken. This category is very simple and doesn't require much effort put into it besides design of course.

You may be wondering why so many categories? Well, I found a abundant amount of sketches. They are all in the digitalizing process and to speed it up I thought it'd be easier to just color neat sketches and add the extra info and then I'd be done in a short amount of time. I will explain in the post why I am doing a event this big, until then- thank you for following the development of- I mean- thank you for reading!