People forget there is also element of luck in staking. EXAMPLE
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Even just a small stake of 1 sprts > 5days old will have a 99.999% probability of hitting a stake.
So, take the 30k example the probability of hitting stake after 5 days will be reduced to 99.91% which will increase chance of hitting stake
*all the above is example to illustrate the element of luck involved.
You could be lucky and only hold 30k sprouts and it hits on the first block after 5th day. 4801 blocks from date of the input.
Why is the 4801 block important ?
Sprouts has 90sec Block time
60sec * 60sec = 3600sec (1Hr) // seconds in 1 Hour
3600 sec * 24(hrs) = 86400 // seconds in 24hrs (1 day)
86400 secs / 90sec (blk time) = 960 blocks // Number of Blocks produced per day
960 blks * 5 days = 4800 blocks // Number of blocks before coins reach maturity
You could be lucky and have a small amount hit on block 4801 blocks.
So to say with 100% certainty that if you hold X number of coins it will take 7, 8th, 9th, 100th days cannot be spot on perfect.
Its a probability it will hit but not guaranteed so DO NOT become disheartened if your only staking small blocks you could also be lucky!
In the grand scheme of things larger blocks stake faster as that is how this pos scheme works.
But you do also have to account for the element of Luck!Plus, no matter HOW LONG IT TAKES you will still receive your daily 2% pos interest.
The only drawback to longer stake times is you cannot compound your interest as quickly.
I have had small blocks mature on 5th day AND stake later on during the 5th day multiple times in the past.
Its all good, Grab some and stake
And Stay lucky !