Recommendations: the bigger the down payment the better the offer. Cash is always king but bank looks for net. Sales price minus expenses.
If you like it, others will like it too.
Depends on market. property, supply, buyer...
Percentage: 100% could help, 120% might get your the property.
But one rule I tell my clients, if you like it, write, do not wait. I have seen homes gone in hours. Even on Friday when it suppoes that banks are ready to close the day.