You should use a reverse sealed first-price auction when:
The winner will be the lowest bidder, and they will be owed their bid.
An example of when to use a reverse sealed first-price auction is if you want someone to mow your lawn, you want to pay the lowest possible price, you do not care who performs the work, and the bidders do not understand that they should bid their true valuation in a reverse Vickrey auction.
If the highest bidder should win and owe their bid, consider a sealed first-price auction.
During the auction, you can create ballots and distribute them as you please. Each ballot can be submitted with a bid or declined. You will be able to see when each decision is made, but not the content of each decision.
When the auction resolves, you will be able to see the label of the winning ballot and the transaction price. The winning ballot will also be able to see that information.
No other information will be revealed to you.