JET-PUMP Installation

Hello, I'm after advice from professional Water-Well pump installers.
Have a look at the attached diagram illustrating my Well installation. I am intending to install a 900W (~1-1/5Hp) Jet-Pump with a fully immersed Foot-Valve at a depth of ~ 5-6m (I'm roughly at sea-level). My concern is the horizontal distance from the pump-house location of the jet-pump to the well-head, some 4.3m (~14 feet). Many installions I've seen have the pump located much closer than this so I am concerned as to whether this may cause problems with adequate suction. I do not wish to move the pump-house closewr as this would entail a huge amount of expensive and time-consuming work (new foundations, electrical and plumbing re-connections, etc). NB There is no snow or freezing conditions.
Can anyone with long experience of these types of installations advise me whether my concerns are legitemate or whether there is nothing to worry about?
The pump inlet/outlet is 1"BSP (~25mm), you will note from the diagram that the inlet pipe through to the Foot-Valve is 1-1/4" ID so this will limit fluid friction. Also, (not shown) a non-return valve will be installed at the pump inlet. Any comments?
Thanks for all helpful replies.

Closer the better, but 14' is probably OK. Also the foot valve is the only check valve needed. Any extra check valve will make the pump lose prime. A submersible is always better than a jet if installation is possible. But here is a pic of a jet pump set up.

Hi Valveman,
Thanks for your encouraging advice. In hindsight, I realsised that two priming ports required for an inlet check-valve was never going to be a go-er so will only install it on the pump outlet. I'm pulling the existing submersible out (it's a sledgehammer to crack a nut and bleeds money like an open wound). The jet-pump, though less efficient, puts all the significant moving parts on the surface so makes repairs much easier (and way-cheaper). Also, the well-head is substantially collapsed due to corrosion so wont support any significant weight. (See attached photo).
Thanks again.

That well head needs to be fixed! I find submersibles much more reliable and less trouble than a jet pump. You should probably figure out why you are having problems with a sub, as you will have similar problems with the jet.

That duct tape probably isn't the most sanitary fix for that moth eaten casing. You might want to take Valveman's advice.