Like the handlebars
Much better for comfort and control on the roads. On my bike I wouldn't have the height for a suspension post. I would be worried about getting snake bite flats on hitting kerbs or pot holes, running at only 25 psi. 40 to 50 psi is about as low as I'd be happy to go.
You can get decent hydraulic brake upgrades quite cheap these days:
High braking power with precise dosing: Shimano Disc Brake BR-MT200 Hydraulic disc brake with a high, precisely metered braking force in the powerful design. Opposing pistons prevent vibrations. Natural mineral oil as hydraulic fluid,...
www.bike-discount.de
Although, bear in mind, if buying from the continent, they have their left and right brake handles controlling the opposite brakes compared to the UK, so be prepared to swap the hoses over. You might be able to get similar prices on eBay, although I worry about how genuine the cheaper sets are on there.