Karabiner capslock/ctrl/escape/ vim + hjkl arrows touchtyping improvement

gistfile1.txt

{
    "description": "CapsLock ctrl layer + hjkl arrows",
    "manipulators": [
        {
            "type": "basic",
            "from": {
                "key_code": "caps_lock",
                "modifiers": { "optional": ["any"] }
            },
            "to": [{ "key_code": "left_control" }],
            "to_if_alone": [{ "key_code": "escape" }]
        },

        {
            "type": "basic",
            "from": {
                "key_code": "h",
                "modifiers": { "mandatory": ["control"], "optional": ["any"] }
            },
            "to": [{ "key_code": "left_arrow" }]
        },
        {
            "type": "basic",
            "from": {
                "key_code": "j",
                "modifiers": { "mandatory": ["control"], "optional": ["any"] }
            },
            "to": [{ "key_code": "down_arrow" }]
        },
        {
            "type": "basic",
            "from": {
                "key_code": "k",
                "modifiers": { "mandatory": ["control"], "optional": ["any"] }
            },
            "to": [{ "key_code": "up_arrow" }]
        },
        {
            "type": "basic",
            "from": {
                "key_code": "l",
                "modifiers": { "mandatory": ["control"], "optional": ["any"] }
            },
            "to": [{ "key_code": "right_arrow" }]
        }
    ]
}