Blimey gin, you're so busy! Varnishing floors is a tough job as well! Hope you're not too knackered!
Do you know what the bushes are? This might make a difference. Large things can be moved, but it's more work - to state the obvious, the bigger the plant, the bigger the rootball, the heavier the job.
My project, as soon as I am able to wield a spade, is to move two things in the garden - a viburnum which is well over 2 metres tall and a fatsia which is about 1.6 metres. I expect both to survive, and will be having stern words with them if they do not.
I will carefully dig out as much of the rootball as I can, and I'll be trying to keep the soil as packed around the roots as is possible so I'm disturbing the relationship between roots and soil as little as I can - this is much easier on my wet, heavy clay than on a free-draining soil. I'll make a big hole to put them into, with loads of manure in the bottom. Then I'll get DH to help me lift them onto a tarpaulin and shift them to their new spots - this is definitely a two person job, the soil weighs a LOT. I can tell you now that I will be repeatedly yelling at DH not to step on the neighbouring dicentra/daffodils/candelabra primulas... which he will nonetheless manage to trample into oblivion in spite of my warning.
I'll then chuck gallons on water on them. They may well need some water during really hot weather, as it can take a whole year for roots to properly re-establish. I'll probably prune the viburnum to reduce water stress and give it a helping hand too.
Doing one of them will probably take me over an hour - the digging out is patient, muddy and hard work because it has to be done so carefully (destroying stuff is much easier and more fun!), making the new hole properly big and free is hard work too. But I am quite slow and liable to be distracted!
Sooooo... I reckon you could probably do the same with yours, provided they aren't some of the small number of things that hate being transplanted from spot to spot (that's why I asked what they are at the start). 
About the pine... one of the things I'm learning now (after making 10 years of mistakes about the placing of plants - mistakes that continue, hence the need to move the afore-mentioned fatsia and viburnum) is that a lot of really effective design is about two kinds of relation: how the garden relates to the external surrounding views (or doesn't in my case - I am desperately trying to hide external buildings that are really ugly!!) and how your eye is drawn through it internally by careful framing of some aspects and hiding of others. So what I'm now trying to achieve now (emphasis on trying - I'm not there yet!) in my small garden is a framing of the viewpoint from the main angles of visual approach - so there are places where you can see all the way down, and places where you can't. I'm not clever enough to have worked out the principles behind this, so I just muddle through using trial & error
I guess something that 'blocks' a view - like your pine - is great if it's in the right place - but a complete pain if it's not!!
Love your description of the pine as a 'hub for imagination'! That's so true! I used to use plants as landmarks when I was little!